<ion-view view-title="{{viewTitle}}">
    <ion-content>
        <button class="button button-dark" ng-click="$ctrl.showPopup()">
            show
        </button>
        <button class="button button-royal" ng-click="$ctrl.showPrompt()">
            Prompt
        </button>
        <button class="button button-assertive" ng-click="$ctrl.showConfirm()">
            Confirm
        </button>
        <button class="button button-positive" ng-click="$ctrl.showAlert()">
            Alert
        </button>
    </ion-content>
</ion-view>